Durability of Bituminous-Lined Corrugated Steel Pipe Storm Sewers (Appendices)

摘要

The study involved field inspection and analysis of representative bituminous lined storm sewers throughout Ohio. In addition to visual observation of lining condition, measurements were made of lining thickness and the physical and chemical characteristics of conduit flow. The study also included an investigation of the construction techniques of 3 bituminous lined corrugated steel pipe manufacturers. The study concluded that 71% of sections inspected demonstrated loss of protection. Ninety percent of all inspected pipe demonstrated less than 10% protection loss. Bituminous lining failure occurred solely by loss of bond and typically occurs in less than 8 years. Bituminous lining failure appears to be unrelated to conditions of flow or pipe death. Optimal lining thickness was found to be 1/4 - 1/3 inches. Finally, lining failure can be linked to the manufacturing process. A number of recommendations are proposed for establishment of ODOT bituminous lined corrugated steel pipe standards and specifications for pipe manufacturers.